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add the ability to export cameras information in a collada file

pull/570/head
wise86Android 2015-05-17 20:54:45 +02:00
parent a1268bf864
commit fb4eb83e84
4 changed files with 160 additions and 3 deletions
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60
code/ColladaExporter.cpp
View File

@ -127,6 +127,7 @@ void ColladaExporter::WriteFile()
WriteTextures();
WriteHeader();
WriteCamerasLibrary();
WriteMaterials();
WriteGeometryLibrary();
@ -286,6 +287,61 @@ void ColladaExporter::WriteTextures() {
}
}
// ------------------------------------------------------------------------------------------------
// Write the embedded textures
void ColladaExporter::WriteCamerasLibrary() {
if(mScene->HasCameras()) {
mOutput << startstr << "<library_cameras>" << endstr;
PushTag();
for( size_t a = 0; a < mScene->mNumCameras; ++a)
WriteCamera( a);
PopTag();
mOutput << startstr << "</library_cameras>" << endstr;
}
}
void ColladaExporter::WriteCamera(size_t pIndex){
const aiCamera *cam = mScene->mCameras[pIndex];
const std::string idstrEscaped = XMLEscape(cam->mName.C_Str());
mOutput << startstr << "<camera id=\"" << idstrEscaped << "-camera\" name=\"" << idstrEscaped << "_name\" >" << endstr;
PushTag();
mOutput << startstr << "<optics>" << endstr;
PushTag();
mOutput << startstr << "<technique_common>" << endstr;
PushTag();
//assimp doesn't support the import of orthographic cameras! se we write
//always perspective
mOutput << startstr << "<perspective>" << endstr;
PushTag();
mOutput << startstr << "<xfov sid=\"xfov\">"<<
AI_RAD_TO_DEG(cam->mHorizontalFOV)
<<"</xfov>" << endstr;
mOutput << startstr << "<aspect_ratio>"
<< cam->mAspect
<< "</aspect_ratio>" << endstr;
mOutput << startstr << "<znear sid=\"znear\">"
<< cam->mClipPlaneNear
<< "</znear>" << endstr;
mOutput << startstr << "<zfar sid=\"zfar\">"
<< cam->mClipPlaneFar
<< "</zfar>" << endstr;
PopTag();
mOutput << startstr << "</perspective>" << endstr;
PopTag();
mOutput << startstr << "</technique_common>" << endstr;
PopTag();
mOutput << startstr << "</optics>" << endstr;
PopTag();
mOutput << startstr << "</camera>" << endstr;
}
// ------------------------------------------------------------------------------------------------
// Reads a single surface entry from the given material keys
void ColladaExporter::ReadMaterialSurface( Surface& poSurface, const aiMaterial* pSrcMat, aiTextureType pTexture, const char* pKey, size_t pType, size_t pIndex)
@ -847,6 +903,9 @@ void ColladaExporter::WriteNode(aiNode* pNode)
mOutput << mat.d1 << " " << mat.d2 << " " << mat.d3 << " " << mat.d4;
mOutput << "</matrix>" << endstr;
if(pNode->mNumMeshes==0){
mOutput << startstr <<"<instance_camera url=\"#" << node_name_escaped << "-camera\">" << endstr;
}else
// instance every geometry
for( size_t a = 0; a < pNode->mNumMeshes; ++a )
{
@ -854,7 +913,6 @@ void ColladaExporter::WriteNode(aiNode* pNode)
// do not instanciate mesh if empty. I wonder how this could happen
if( mesh->mNumFaces == 0 || mesh->mNumVertices == 0 )
continue;
mOutput << startstr << "<instance_geometry url=\"#" << XMLEscape(GetMeshId( pNode->mMeshes[a])) << "\">" << endstr;
PushTag();
mOutput << startstr << "<bind_material>" << endstr;

5
code/ColladaExporter.h
View File

@ -83,6 +83,11 @@ protected:
/// Writes the material setup
void WriteMaterials();
/// Writes the cameras library
void WriteCamerasLibrary();
void WriteCamera(size_t pIndex);
/// Writes the geometry library
void WriteGeometryLibrary();

1
test/CMakeLists.txt
View File

@ -40,6 +40,7 @@ SET( TEST_SRCS
unit/utTriangulate.cpp
unit/utVertexTriangleAdjacency.cpp
unit/utNoBoostTest.cpp
unit/utColladaExportCamera.cpp
)
SOURCE_GROUP( tests FILES ${TEST_SRCS} )

93
test/models/Collada/cameras.dae 100644
View File

@ -0,0 +1,93 @@
<?xml version="1.0" encoding="utf-8"?>
<COLLADA xmlns="http://www.collada.org/2005/11/COLLADASchema" version="1.4.1">
<asset>
<contributor>
<author>Blender User</author>
<authoring_tool>Blender 2.74.0 commit date:2015-03-31, commit time:13:39, hash:000dfc0</authoring_tool>
</contributor>
<created>2015-05-17T19:24:51</created>
<modified>2015-05-17T19:24:51</modified>
<unit name="meter" meter="1"/>
<up_axis>Z_UP</up_axis>
</asset>
<library_cameras>
<camera id="Camera-camera" name="Camera.001">
<optics>
<technique_common>
<perspective>
<xfov sid="xfov">49.13434</xfov>
<aspect_ratio>1.777778</aspect_ratio>
<znear sid="znear">0.1</znear>
<zfar sid="zfar">100</zfar>
</perspective>
</technique_common>
</optics>
<extra>
<technique profile="blender">
<YF_dofdist>0</YF_dofdist>
<shiftx>0</shiftx>
<shifty>0</shifty>
</technique>
</extra>
</camera>
<camera id="Camera_002-camera" name="Camera.002">
<optics>
<technique_common>
<orthographic>
<xmag sid="xmag">3</xmag>
<aspect_ratio>1.777778</aspect_ratio>
<znear sid="znear">0.1</znear>
<zfar sid="zfar">100</zfar>
</orthographic>
</technique_common>
</optics>
<extra>
<technique profile="blender">
<YF_dofdist>0</YF_dofdist>
<shiftx>0</shiftx>
<shifty>0</shifty>
</technique>
</extra>
</camera>
<camera id="Camera_003-camera" name="Camera.003">
<optics>
<technique_common>
<perspective>
<xfov sid="xfov">29.86284</xfov>
<aspect_ratio>1.777778</aspect_ratio>
<znear sid="znear">0.1</znear>
<zfar sid="zfar">50</zfar>
</perspective>
</technique_common>
</optics>
<extra>
<technique profile="blender">
<YF_dofdist>0</YF_dofdist>
<shiftx>0</shiftx>
<shifty>0</shifty>
</technique>
</extra>
</camera>
</library_cameras>
<library_images/>
<library_controllers/>
<library_visual_scenes>
<visual_scene id="Scene" name="Scene">
<node id="Camera" name="Camera" type="NODE">
<matrix sid="transform">7.54979e-8 0 1 10 0 1 0 0 -1 0 7.54979e-8 0 0 0 0 1</matrix>
<instance_camera url="#Camera-camera"/>
</node>
<node id="Camera_002" name="Camera_002" type="NODE">
<matrix sid="transform">7.54979e-8 0 -1 -10 0 1 0 0 1 0 7.54979e-8 0 0 0 0 1</matrix>
<instance_camera url="#Camera_002-camera"/>
</node>
<node id="Camera_003" name="Camera_003" type="NODE">
<matrix sid="transform">3.09086e-8 -1 1.58933e-8 0 -3.09086e-8 1.58933e-8 1 5 -1 -3.09086e-8 -3.09086e-8 0 0 0 0 1</matrix>
<instance_camera url="#Camera_003-camera"/>
</node>
</visual_scene>
</library_visual_scenes>
<scene>
<instance_visual_scene url="#Scene"/>
</scene>
</COLLADA>